Example 2: In the following table called Customers, return only one Phone Number with priority to CellPhone first, then DayPhone, then NightPhone. Return Cellphone is CellPhone is not NUll. If CellPhone is Null, return DayPhone. If both CellPhone and DayPhone are Null, return NightPhone.

Example: In the following table called Customers, return only one Phone Number with priority to CellPhone first then DayPhone. Return Cellphone is CellPhone is not Null. If CellPhone is Null, return DayPhone.

Example: In the following table called Customers, return only one Phone Number with priority to CellPhone first then DayPhone. Return Cellphone is CellPhone is not Null. If CellPhone is Null, return DayPhone.